1. Indicate whether or not the events detailed in each of the following are mutually exclusive:

1. Students are asked on a survey if they have ever cheated on an exam, helped another person cheat on an exam, or plagiarized a term paper.
2. A developmental psychology survey asks people to indicate their age using the following checklist, 0-20, 21-30, 31-40, 41-50, 51-60, over 60.
3. Clients at a stress-clinic are given the following list and asked to check all the techniques that they have used for stress reduction: meditation, imagery, exercise, hypnosis, and psychotherapy.
4. On a craps table in Las Vegas, a gambler wants to roll 7 or 11 with two dice.

1. Three thousand individuals were randomly selected to answer a survey on drug use. They were asked whether or not they had used each of the following drugs. The number that reported "yes" for each drug are given below. What is the probability that an individual has used at least one of the drugs listed?

Drug Number of users

Marijuana 1,052

Cocaine 524

LSD 103

Heroin 12

1. A researcher is interested in attitudes toward the use of the insanity defense in criminal cases. Respondents were asked to indicate their political orientation (liberal, moderate, or conservative) and their feelings about the legal use of the insanity defense (abolish it or keep it). The numbers of people in each category are as follows:

	Liberal	Moderate	Conservative
Abolish it	5	60	204
Keep it	185	65	25

1. What is the probability that a person will favor keeping the insanity defense?
2. What is the probability that a person is a moderate and favors keeping the insanity defense?
3. Given a person isnot a conservative, what is the probability that that person will favor keeping the insanity defense?

1. Suppose you had 50 people's scores on the Modern Racism Scale. How would we create a sampling distribution of the mean from that population using a sample size of 8?

1. Imagine a population of raw scores that has a mean of 120 and a standard deviation of 16, determine the shape,m_Xbar, ands_Xbar of the sampling distribution of the mean for a sample size of 10. Do the same for a sample size of 30.